Home / 13,286.53-18,335.42-7,318.19

Finding the Fourth Proportional to 13,286.53, 18,335.42 and 7,318.19

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Solution

The fourth proportional to 13,286.53, 18,335.42 and 7,318.19 is: 10,099.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.53 : 18,335.42 = 7,318.19 : x
  2. Step 2: Convert to fraction form
    13,286.53/18,335.42 = 7,318.19/x
  3. Step 3: Cross multiply
    13,286.53x = 18,335.42 × 7,318.19
  4. Step 4: Simplify right side
    13,286.53x = 134,182,087.29
  5. Step 5: Solve for x
    x = 134,182,087.29/13,286.53
  6. Step 6: Final answer
    x = 10,099.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.